The Spira S-507 QFB 7-String in Fireburst is a modern extended-range electric designed for tight low-string response, fast playability and high-gain clarity.

Its specification combines a mahogany body with quilted maple top, Canadian roasted maple neck and roasted maple fingerboard, while the extended 26.5" scale length helps maintain definition and string tension across all seven strings.

A pair of high-output Spira Villain ceramic humbuckers delivers the power and articulation required for modern metal, progressive rock and down-tuned playing, complemented by a fixed bridge and locking machine heads for straightforward tuning stability.

This pre-owned example is presented in Very Good Condition, weighs 7.26 lbs, and is sold without a case or gigbag.

At A Glance

Detail	Specification
Brand	Spira
Model	S-507 QFB
Finish	Fireburst Gloss
Strings	7
Body	Mahogany
Top	Quilted Maple
Neck	Canadian Roasted Maple
Neck Profile	Modern D
Fingerboard	Roasted Maple
Radius	14"
Scale Length	26.5"
Frets	24 Jumbo
Nut	Bone, 48mm
Pickups	2 x Spira Villain Humbuckers
Pickup Magnets	Ceramic
Pickup Output	12k
Bridge	Fixed
Tuners	Locking
Weight	7.26 lbs
Condition	Very Good
Included	Guitar Only – No Case

Condition Overview

Very Good Condition

This Spira S-507 QFB is presented in Very Good Condition.

Under the Fair Deal Music grading system, Very Good Condition means the guitar shows some cosmetic signs of previous use consistent with careful ownership while remaining fully functional.

At 7.26 lbs, this individual guitar is relatively manageable for a seven-string extended-scale instrument.

What’s Included?

✔ Spira S-507 QFB 7-String Fireburst

✘ No Case Included
✘ No Gigbag Included

No additional accessories are included unless pictured or stated.

Condition Notes

• Very Good overall condition
• Fireburst gloss finish
• Seven-string configuration
• Quilted maple top
• Roasted maple neck and fingerboard
• Dual Spira Villain humbuckers
• Fixed bridge
• Locking tuners
• 7.26 lbs actual measured weight
• No case or gigbag included

Fair Deal Quality Control Assessment

This pre-owned Spira has been checked for general operation and playability.

Assessment includes:

• Neck pickup operation
• Bridge pickup operation
• Pickup selector
• Volume control
• Tone control
• Output jack
• Neck condition
• Fingerboard
• Frets
• Bone nut
• Locking tuners
• Fixed bridge
• Saddles
• General hardware
• Structural condition
• Overall setup
• General playability

Service / Setup Work

All pre-owned guitars at Fair Deal Music are checked for general setup and playability before leaving the shop.

Key areas assessed include:

• Action
• Neck relief
• Fret condition
• Intonation
• Tuning stability
• Pickup operation
• Electronics
• Bridge adjustment
• Hardware
• General playing feel

Players intending to change substantially from the existing string gauge or tuning may require a corresponding setup adjustment.

What Makes The Spira S-507 QFB Special?

The S-507 QFB is designed specifically around the demands of modern seven-string playing rather than adapting a conventional six-string platform.

Its 26.5" scale, roasted maple neck, 14" radius, jumbo frets, fixed bridge and high-output ceramic humbuckers create a guitar focused on accurate low-register response, fast technique and dependable tuning.

The Fireburst-finished quilted maple top also gives the S-507 a more premium visual identity than many stripped-back extended-range instruments.

Mahogany Body

The body is constructed from mahogany.

Mahogany provides a strong tonal foundation with:

• Full low frequencies
• Present midrange
• Natural sustain
• Solid fundamental notes

This works particularly well on a seven-string, where maintaining weight and authority on the lowest notes is important.

Quilted Maple Top

The mahogany body is topped with quilted maple.

Visually, the quilt figuring provides considerable depth beneath the gloss Fireburst finish.

The maple top also complements the mahogany body with a more defined attack, helping low-register notes retain clarity.

Fireburst Gloss Finish

The Fireburst finish combines warmer yellow and amber tones through to darker red and brown shading around the perimeter.

Its transparent nature allows the quilted maple figuring to remain clearly visible.

The high-gloss finish gives the guitar a polished, contemporary appearance suited to its modern design.

Canadian Roasted Maple Neck

The neck is made from Canadian roasted maple.

The roasting process removes moisture from the wood under controlled heat, resulting in a neck material valued for its stability and distinctive darker appearance.

It also complements the demands of a seven-string guitar, where the wider neck and extended scale place additional importance on structural consistency.

Modern D Neck Profile

The S-507 uses Spira's Modern D neck profile.

This shape is intended to provide a relatively flat, fast-playing rear contour suited to:

• Technical lead playing
• Fast riffing
• Wide stretches
• Extended-range chord voicings
• Modern metal techniques

Roasted Maple Fingerboard

The fingerboard is also made from roasted maple, producing a consistent feel and appearance across the neck.

Its smooth surface and relatively flat radius suit fast, technical playing particularly well.

14" Fingerboard Radius

The fingerboard uses a 14" radius.

This is flatter than many traditional electric guitars and provides plenty of room for:

• Wide bends
• Fast legato
• Alternate picking
• Sweeping
• Tapping
• Low action setups

24 Jumbo Frets

The S-507 provides 24 jumbo frets, giving a full two-octave range per string.

The jumbo fretwire reduces the amount of fingerboard contact required when fretting notes and is particularly suited to modern lead playing.

26.5" Scale Length

One of the most important elements of the S-507 is its 26.5" scale length.

Compared with a conventional 25.5" guitar, the additional scale length increases string tension.

On a seven-string this helps provide:

• Tighter low-B response
• Better definition when down-tuned
• More stable pitch under aggressive picking
• Clearer low-register chords
• Improved separation under high gain

It remains short enough to feel manageable for players transitioning from conventional six-string guitars.

48mm Bone Nut

The guitar uses a 48mm bone nut.

The wider nut accommodates the seven-string layout while maintaining appropriate string spacing across the fingerboard.

Bone provides a hard, traditional string-contact surface.

Dual Spira Villain Humbuckers

The S-507 uses two Spira Villain seven-string humbuckers.

These custom-designed pickups use:

• Ceramic magnets
• Approximately 12k output
• Humbucking construction

They are intended for powerful, articulate performance under higher levels of gain.

Neck Villain Humbucker

The neck pickup provides a fuller, smoother voice suited to:

• Lead playing
• Legato
• Clean passages
• Fluid solos
• Sustained high-gain tones

Bridge Villain Humbucker

The bridge pickup provides the tighter and more aggressive response required for:

• Palm-muted riffs
• Modern metal
• Progressive metal
• Drop tunings
• High-gain rhythm work
• Fast alternate picking

Ceramic Magnets

The Villain humbuckers use ceramic magnets.

Ceramic pickups are commonly chosen for modern high-gain instruments because they can provide:

• Strong output
• Tight low frequencies
• Fast attack
• Defined upper mids
• Good clarity under saturation

Simple Control Layout

The electronics keep operation straightforward with:

• Master Volume
• Master Tone
• Pickup Selector

This avoids unnecessary switching and keeps the guitar focused on fast, practical stage and studio use.

Fixed Bridge

The S-507 uses a fixed bridge.

For extended-range players, a fixed bridge offers several practical advantages:

• Straightforward alternate tuning
• Stable setup
• Easy string changes
• No tremolo balancing
• Predictable palm-muting feel

This makes the guitar especially practical for players who frequently move between standard and lower tunings.

Locking Machine Heads

The black locking tuning machines help secure the strings at the headstock.

Benefits include:

• Faster string changes
• Reduced string slippage
• Cleaner winding
• Consistent tuning

They complement the fixed bridge to create a straightforward, stability-focused hardware setup.

Seven-String Range

A seven-string guitar adds a lower string beneath the conventional six-string range.

In standard seven-string tuning, this is generally a low B.

The additional register provides:

• Extended low-range riffs
• Wider chord voicings
• Modern metal rhythm sounds
• Additional scale positions
• Greater range without sacrificing conventional six-string notes

Weight

7.26 lbs

This is the actual measured weight of this individual guitar rather than a manufacturer estimate.

For a solidbody seven-string with a 26.5" scale, 7.26 lbs makes this a relatively comfortable instrument for longer sessions and live use.

Who Is It For?

Modern metal players – Extended scale and ceramic humbuckers provide tight low-register response.

Progressive guitarists – Seven strings, 24 frets and a flatter fingerboard provide the additional range needed for complex arrangements.

Technical players – Jumbo frets and a Modern D neck profile suit fast lead techniques.

Down-tuned players – The 26.5" scale helps maintain string tension below conventional tuning.

Studio guitarists – Seven-string range allows additional voicings and low-register layering.

Players moving into extended-range guitars – Its scale remains relatively approachable compared with longer baritone-style seven-strings.

Suitable Genres & Applications

Particularly well suited to:

• Modern metal
• Progressive metal
• Djent
• Metalcore
• Hard rock
• Progressive rock
• Alternative metal
• Technical metal
• Instrumental guitar
• Drop-tuned music
• Studio recording
• Live performance
• High-gain rhythm
• Technical lead guitar

Technical Specifications

Specification	Details
Product Type	Solid Body Electric Guitar
Brand	Spira
Model	S-507 QFB
Finish	Fireburst
Finish Type	Gloss
Number of Strings	7
Country of Manufacture	China
Body Material	Mahogany
Top Material	Quilted Maple
Neck Material	Canadian Roasted Maple
Neck Construction	Bolt-On
Neck Profile	Modern D
Neck Finish	Satin
Fingerboard Material	Roasted Maple
Fingerboard Radius	14" / 355.6mm
Scale Length	26.5" / 673.1mm
Number of Frets	24
Fret Size	Jumbo
Position Markers	Offset Dots
Nut Material	Bone
Nut Width	48mm
Pickup Configuration	HH
Neck Pickup	Spira Villain 7-String Humbucker
Bridge Pickup	Spira Villain 7-String Humbucker
Pickup Output	Approx. 12k
Pickup Magnets	Ceramic
Electronics	Passive
Controls	Master Volume, Master Tone
Switching	Pickup Selector
Bridge	Fixed
Tuning Machines	Locking
Hardware Finish	Black
Weight	7.26 lbs
Included	No Case or Gigbag
Condition	Pre-Owned, Very Good

Seven-String Setup Note

The S-507's 26.5" scale is designed to provide increased tension compared with a conventional six-string scale.

Players changing to significantly heavier or lighter string gauges, or moving into particularly low tunings, may benefit from adjustments to:

• Neck relief
• Action
• Intonation
• Nut slots

This is normal setup work rather than a limitation of the instrument.

Case Note

No case or gigbag is included.

Suitable protection should therefore be considered if the guitar will be transported regularly.

Power Requirements

None.

The Spira Villain humbuckers and controls are fully passive.

No battery or external power supply is required.

Fair Deal Music Verdict

The Spira S-507 QFB 7-String in Fireburst is a focused modern extended-range guitar with an unusually strong specification for players who prioritise low-register definition and fast playability.

The combination of a mahogany body, quilted maple top, roasted maple neck and fingerboard, 26.5" scale, 24 jumbo frets and dual ceramic Villain humbuckers gives it the core ingredients required for modern metal and progressive playing.

The fixed bridge and locking tuners also keep the hardware straightforward and practical, particularly for players using alternate tunings.

At 7.26 lbs, this example is comfortably weighted for a seven-string.

Presented in Very Good Condition and sold without a case or gigbag, it is a compelling option for anyone entering the extended-range world or looking for a dedicated high-gain seven-string.

Why Buy Pre-Owned From Fair Deal Music?

Every pre-owned guitar at Fair Deal Music is individually assessed so its actual condition, measured weight and included accessories are represented clearly.

On this Spira, the Very Good condition grade, 7.26 lbs measured weight and absence of a case or gigbag are all clearly stated.

Why Buy From Fair Deal Music?

When you buy from Fair Deal Music, you're choosing one of the UK's most established, independent family run music retailers since 1987.

When you buy from us, you benefit from:

• Family-run independent retailer established in 1987
• Birmingham's largest independent music store
• 6,000+ Trustpilot reviews
• Expert musician-led advice
• Pre-owned instruments individually assessed
• Clear condition grading
• Secure ordering
• Fast UK delivery
• Large Birmingham showroom
• Friendly support before and after purchase

Trade In. Trade Up. Save More.

Your existing guitar could help towards the cost of this Spira.

Fair Deal Music buys and part-exchanges guitars, basses, amplifiers, effects, keyboards and other musical equipment.

Contact our team for a no-obligation valuation and find out what your current gear could be worth towards this Spira S-507 QFB 7-String.

Frequently Asked Questions

What condition is this Spira S-507 in?

It is presented in Very Good Condition, showing some cosmetic wear consistent with careful previous ownership while remaining fully functional.

What finish does it have?

It has a gloss Fireburst finish over a quilted maple top.

How many strings does it have?

It is a 7-string electric guitar.

What is the body made from?

It has a mahogany body with a quilted maple top.

What is the neck made from?

The neck is constructed from Canadian roasted maple.

What neck profile does it have?

It uses Spira's Modern D profile.

What fingerboard does it have?

It has a roasted maple fingerboard.

What is the fingerboard radius?

The radius is 14".

What scale length does it use?

It uses a 26.5" scale length.

Why use a 26.5" scale on a seven-string?

The longer scale helps maintain tension and definition on the lowest string, particularly when using lower tunings.

How many frets does it have?

It has 24 jumbo frets.

What nut does it have?

It uses a 48mm bone nut.

What pickups are fitted?

It uses two Spira Villain seven-string humbuckers.

What magnets do the pickups use?

They use ceramic magnets.

What output are the pickups?

Spira rates the Villain pickups at approximately 12k output.

Are the pickups active?

No. They are passive humbuckers.

Does the guitar require a battery?

No.

Does it have a tremolo?

No. It uses a fixed bridge.

Does it have locking tuners?

Yes. Locking machine heads are fitted.

Is it suitable for down-tuning?

Yes. The 26.5" scale and fixed bridge make it particularly suitable for lower tunings when paired with an appropriate string gauge and setup.

Is it suitable for modern metal?

Yes. The seven-string range, ceramic humbuckers and extended scale are all particularly well suited to modern metal and progressive styles.

How much does it weigh?

This individual guitar weighs 7.26 lbs.

Does it come with a case?

No. No case or gigbag is included.

Can I request a video demo?

Yes. Our Request a Video Demo service is ideal if you would like to see the Fireburst quilted top and individual condition or hear the Villain humbuckers before purchasing.

Can I part-exchange another guitar against it?

Yes. Fair Deal Music considers trade-ins and part exchanges across a wide range of guitars and other musical equipment.